add information of parasite collections

[arw36]

European

• für Naturkunde Berlin
• London Parasitic Worms

Large, notable collections without open data (i.e. not awesome yet)

• Instituto Nacional de Pesquisas de Amazonia
• Institute of Parasitology Parasite Collection

Taxonomically focused:

• U.S. National Tick Collection at Georgia Southern University, Statesboro, Georgia
• Traub flea collection at the Carnegie Museum of Natural History, Pittsburgh, Pennsylvania)
• British Fleas

Not awesome databases:

• Fauna Europaea: Helminths (Animal Parasitic): https://bdj.pensoft.net/article/1060/
• Fish gill parasites